Control device



C. L.. BRYANT CONTROL DEVICE July 5, 1932.

Filed Nov. 14, 1950 :NVLNTOK A'TTO RNL A$ /.5 Charles) I--B rsan'bPatented July 5, 1932 Z D STATES PATENT OFFICE CHARLES L, BRYANT, OFCLEVELAND, OHIO, ASSIGNOR T C. L. BRYANT CORPORATION,

. OF CLEVELAND, OHIO, A CORPORATION OF OHIO CONTROL DEVICEv Applicationfiled November 14, 1930. Seria1 No.495,690 H y This invention relates tocontrol devices for provided with a nut 31 holding said cage in heatersand hasffor an object the provision position, and also provided with astufling of new and improved devices of this character. box 32,surrounding an operating stem 33 "In the drawing accompanying thisspecifisecured to the valve 28, and extending upcation and forming apart of this application wardly through and beyond the wall 340i the "Ihave shown, for purposes of illustration, Cage 30, the latter alsoprovided at one side one form which my invention may assume, with averticallyextending wall 35 and an and in this drawin I f i upperhorizontally extending wall 36 spaced Figure 1 is afraginentaryhorizontal secfrom the wall 34, carrying a pair of up- 10 tional view 7takenthrough the combustion standing ears 37between which a lev 38 is chbe f a fu n a d di l ing a lan pivotally mounted, as at 39, said leverextendview of an embodiment, of the invention, ing between forkedmembers 40 formed upon Figure 2 isa fragmentary elevational view & P ae/ upported by the Wall 36 of the of said furnace, and of saidembodiment. ge ttached to the upper end of the stem .5 Figure 3. is anenlarged fragmentary ver- 33-, and adapted for sliding movement ticalsectional view of a fuel control valve emhrough a Suitableslot in thewall 36, is a conpl yed i aid b diment, nector 42 having an'openingdisposed about Figure 4 is: a horizontal sectional view corthe lever 38the walls of said opening being responding to the line 4- -4 of Figure3, while I'O S ca ed at 43.

J0 Fi 5 i a horizo tal ti l i o Between the walls 34 and 36 the stem 33is responding to theline 55 of Figure 2. provided with a cam member 44aflixed to the i The embodiment herein. shown comprises te y a p111 45and cooperating with the a furnace lOhaving afir'e-box 11, providing acam member 4 1s a second cam member 46 combustion chamber 12, in whichis mounted n ng ald s em and having a handle a gas burner 13, suppliedwith gaseous fuel Pr With a latch 48 dap to through a conduit 14extending outwardly g g s no c es 49 of aquadrant 5O fixed through anopening 15 of the fire box 11, and t0 e e 34 103 Screws 51.

communicating with an outlet chamber 16 e er 38 at lts Outer endisiconnected of a valve means 17, separated by an angular y a fieXlble er 5 to an extension partition 18, from an inlet chamber 19, to formed pashutter 3 rotatably s ppor which gas is supplied from the pipe 20, theQ6 by a Plate h latter p ovlded latterfcommunicating with a pressureregu- W th openlngs 56 to correspond to the openlat r 21 connected t aSource f supply b a lugs 57 of-the shutter 53, the shutter 53 being pipe22, and said partition has a valve seat 23 n a y hefld l the Influence0f g y 25 afiording communication b t th 1 in position to entirely closethe openings 56 fb 16 a d 19 Th Casing f th valve in theplate 55.. Theplate 55 may also have 11 9311517 is also provided with a threaded abOSS 58 for e pas ge Of the pipe 14, and boss 24 for the threadedreception ofa fitting y be Secured osald pipe 14 by a Set screw 25,having a wall 26 the lower surface of The Plate 55 also a flange 60 fi lg which provides a bearing for one end of a, 1I1t0 SGCllIOd t0 aboxlikemember Slldspring 27 the opposite end of which bears y Inserted lIltO &0 Ie Wall 62, preferupon a valve 28 ll l i th valve ably of sheet metal,which 1n turn 1s secured opening 23, while the opposite surface of the s63 o the edges of the fire-box 11 so as wall 26 is provided with athreaded boss 29 to close the opening 15 thereof. i projecting into asurmounting cage 30 and In operation, assuming the handle 47 to be inthe position marked closed in Figure 1, the valve 28 and shutter 53 willbe entirely closed; when it is desired to operate the burner 13 thehandle 47 is moved along the quadrant 50 and the latch 48 engaged withany one of the notches 49, this movement of the handle 47 effectingrotation of the cam member 46, elevation of the cam member 44, elevationof the stem 33, and opening of the 0 valve 28, permitting passage of gasinto the chamber 19, through the valve opening 23,

into the chamber 16, and through the pipe 14 to the burner 13. Elevationof the stem 33 effects a corresponding movement of the le- 5 ,ver 38,whichin turn opens the shutter 53 so as to supply air to the combustionchamber 12 and burner 13 in an amount proportioned to the amount of gassupplied to said burner, and thus effecting economical and efficientoperation. Movement of the handle 47 to a different position withreference to the quadrant 50 either cuts down or, increases the supplyfo figasto the burner 13 and ineach case the shutter 53 is automaticallychanged in position to supply a proportionate amount of air commensuratewith the amount of fuel supplied, thereby automatically changing thequantity of air supplied to the combustion chamber whenever the amountof fuel sup- 0 plied to the burner 13 is changed, and thus economicallyand efliciently proportioning theamount of air to the quantity of fueland to, the intensity of combustion.

The box-like member 61 and plate 55 are made adjustable with respect tothe closure wall 62 so that the valve means 17 and operating lever 38may always be placed in correct position with respect to the shutter 53,thus enabling all parts to be made in standard sizes and still besuitable for application to various sizes and types of furnaces.

It will be apparent to those skilled in the art that the embodimentherein disclosed accomplishes at least the principal object of theinvention, and it will also be apparent that various uses and advantagesnot herein particularly referred to are inherent in said invention;furthermore, various changes and modifications may be made withoutdeparting from the spirit of the invention; and accordingly thedisclosure herein is illustrative only and the invention is not limitedthereto;

I claim:

1. A device of the character described havinga combustion chamber and aburner therein, valve means for supplying fuel to said burner and havinga valve and a valve stem movable therewith, a lever operably connectedto, and movable with, said stem, cam means for moving said stem andvalve, to adjust the quantity of fuel supplied to said burner, thus tovary the intensity of combustion, a handle connected to said cam-meansfor operating said cam means, a quadrant cooperable with said handle andhaving a plurality of positions thereon, a latch carried by said handleand engageable with said quadrant at any of said positions, and airsupply means actuable by movement of said lever for admitting a quantityof air to said combustion chamber proportionate to any of the adjustedamounts of fuel supplied to said burner and in each case suflicient toproperly support combustion in said chamber.

2. A furnace comprising: a fire-box having a laterally disposed opening,and a burner therein, means outside of said fire-box and adjacent saidopening for supplying fuel to said burner, means for adjusting thequantity of fuel supplied to said burner, thus to vary the intensity ofcombustion, a closure attached to the fire-box for closing the openinginsaid fire-box, a box-like member laterally adjustable with referenceto said closure and with reference to said fuel supplying means, and airsupply means carried by said box-like member actuable by said adjustingmeans for admittinga quantity of air to said combustion chamberproportionate to any of the adjusted amounts of fuel supplied to saidburner and in each case sufficient to properly support combustion insaid fire-box.

3. A device of the character described having a combustion chamber and aburner therein, valve means for supplying fuel to said burner and havinga valve and a valve stem movable therewith, a lever operably connectedto, and movable with, said stem, cam means for moving said stem andvalve, to adjust the quantity of fuel supplied to said burner, thus tovary the intensity of combustion, a handle connected to said cam meansfor operating said cam means, a quadrant cooperable with said handle andhaving a plurality of positions thereon, a latch carried by said handleand engageable with said quadrant at any of said positions, and airsupply means comprising an oscillatable shutter actua-ble by movement ofsaid lever for admitting a quantity of air to said combustion chamberproportionate to any of the adjusted amounts of fuel supplied to saidburner and in each case suflicient to properly sup port combustion insaid chamber.

4. A furnace comprising: a fire-box having a laterally disposed opening,and a burner therein, valve means outside of said fire-box and adjacentsaid opening for supplying fuel to said burner and having a valve and avalve stem movable therewith, a lever operably connected to and movablewith said stem, cam means for moving said stem to adjust the quantity offuel supplied to said burner, a quadrant, a handle for operating saidcam means and having a latch engageable at diff-erent positions withrespect to said quadrant for holding said handle in adjusted positions,a closure attached to said fire-box for closing the opening in saidfire-box, a box-like member laterally adjustable with reference to saidclosure and to said valve means, and air supply means carried by saidbox-like member actuable by said lever for admitting a quantity of airto said combustion chamber proportionate to any of the adjusted amountsof fuel supplied to said burner and in each case suflicient to properlysupport combustion in said chamber.

In testimony whereof I hereunto afiix my signature.

CHARLES L. BRYANT.

